Cucumis sativus fruit extract is an extract of the fruit of the cucumber. The flesh of cucumbers is primarily composed of water but also contains ascorbic acid (vitamin C) and caffeic acid, both of which prevent water retention, help soothe skin irritations and reduce swelling. Cucumber juice is often recommended as a source of silica to improve the complexion and health of the skin, plus cucumber’s high water content makes it naturally hydrating.